Add ruby example (#83)

README.md

@@ -145,7 +145,7 @@ But for most use cases we suggest to use the JSON interface, which can be easily
 See [td_json_client](https://core.telegram.org/tdlib/docs/td__json__client_8h.html) and [td_log](https://core.telegram.org/tdlib/docs/td__log_8h.html) documentation for detailed JSON interface description,
 scheme [td_api.tl](https://github.com/tdlib/td/blob/master/td/generate/scheme/td_api.tl) or autogenerated [HTML documentation](https://core.telegram.org/tdlib/docs/td__api_8h.html) for the list of all available `TDLib` methods and classes.
 
-See [example/python/tdjson_example.py](https://github.com/tdlib/td/tree/master/example/python/tdjson_example.py) for an example of its usage.
+See [example/python/tdjson_example.py](https://github.com/tdlib/td/tree/master/example/python/tdjson_example.py) and [example/ruby/example.rb](https://github.com/tdlib/td/tree/master/example/ruby/example.rb) for an example of such usage.
 
 <a name="license"></a>
 ## License

example/ruby/Gemfile

@@ -0,0 +1,3 @@
+source 'https://rubygems.org'
+
+gem 'tdlib-ruby'

example/ruby/Gemfile.lock

@@ -0,0 +1,17 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    concurrent-ruby (1.0.5)
+    dry-configurable (0.7.0)
+      concurrent-ruby (~> 1.0)
+    tdlib-ruby (0.2.0)
+      dry-configurable (~> 0.7)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  tdlib-ruby
+
+BUNDLED WITH
+   1.16.1

example/ruby/example.rb

@@ -0,0 +1,61 @@
+require 'tdlib-ruby'
+
+TD.configure do |config|
+  config.lib_path = 'path/to/dir_containing_lobtdjson'
+
+  # You should obtain your own api_id and api_hash from https://my.telegram.org/apps
+  config.client.api_id = 12345
+  config.client.api_hash = '1234567890abcdefghigklmnopqrstuv'
+end
+
+TD::Api.set_log_verbosity_level(1)
+
+client = TD::Client.new
+
+begin
+  state = nil
+
+  client.on('updateAuthorizationState') do |update|
+    next unless update.dig('authorization_state', '@type') == 'authorizationStateWaitPhoneNumber'
+    state = :wait_phone
+  end
+
+  client.on('updateAuthorizationState') do |update|
+    next unless update.dig('authorization_state', '@type') == 'authorizationStateWaitCode'
+    state = :wait_code
+  end
+
+  client.on('updateAuthorizationState') do |update|
+    next unless update.dig('authorization_state', '@type') == 'authorizationStateReady'
+    state = :ready
+  end
+
+  loop do
+    case state
+    when :wait_phone
+      p 'Please, enter your phone number:'
+      phone = STDIN.gets.strip
+      params = {
+        '@type' => 'setAuthenticationPhoneNumber',
+        'phone_number' => phone
+      }
+      client.broadcast_and_receive(params)
+    when :wait_code
+      p 'Please, enter code from SMS:'
+      code = STDIN.gets.strip
+      params = {
+        '@type' => 'checkAuthenticationCode',
+        'code' => code
+      }
+      client.broadcast_and_receive(params)
+    when :ready
+      @me = client.broadcast_and_receive('@type' => 'getMe')
+      break
+    end
+  end
+
+ensure
+  client.close
+end
+
+p @me